2028 Integrated System Plan (ISP)
AEMO’s ISP is a roadmap for the NEM’s transition, and outlines an ‘optimal development path’ (ODP) for generation, storage and network investments to meet both consumer needs and government policies, at least cost, to 2050.
The current ISP is the 2026 ISP, which AEMO published on 25 June 2026. The 2026 ISP, including all appendices and associated supporting materials, is available on the 2026 ISP project page.
Preparing the ISP is a two-year effort, informed by extensive consultation with consumers and advocates, industry, market bodies, governments, academics, environmental groups and consultants.
AEMO is currently developing the 2028 ISP. Stay up to date with the latest ISP developments by subscribing to the mailing list.
ISP Timetable
The ISP Timetable provides stakeholders with the key milestones of the 2028 ISP development process, including the establishment of the Consumer Panel and dates for the release of the Inputs, Assumptions and Scenarios Report (IASR), the ISP Methodology, the Draft ISP and the final ISP. The image below provides a detailed timeline, and the 2028 ISP Timetable document can be downloaded at the link below.
